nod 英 [nɒd] 美 [nɑːd]
第三人称单数： nods；现在分词： nodding；过去式： nodded；过去分词： nodded
I asked him if he would help me and he nodded.
She nodded as a sign for us to sit down.
She could only nod, because her mouth was full.
Everything could be done by a nod and a wink.
She nodded in agreement, and he saw he had carried his point.